Our EXCLUSIVE headliner this Sunday is Rep. John Conyers, Jr., D-Mich. The chairman of the House Judiciary Committee joins me in advance of his committee's hearing next week on President Bush's grant of clemency for Lewis "Scooter" Libby.

Next, we continue our award-winning "On the Trail" series with two presidential hopefuls, Rep. Ron Paul, R-Texas, and former Sen. Mike Gravel, D-Alaska.